Provide an API to dart:developer to control the web server hosting the Service Protocol

runtime/bin/vmservice/server.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of vmservice_io;
 
 class WebSocketClient extends Client {
   static const int PARSE_ERROR_CODE = 4000;
   static const int BINARY_MESSAGE_ERROR_CODE = 4001;
   static const int NOT_MAP_ERROR_CODE = 4002;
@@ skipping 110 matching lines @@
   static const ROOT_REDIRECT_PATH = '/index.html';
 
   final VMService _service;
   final String _ip;
   final int _port;
   final bool _originCheckDisabled;
   HttpServer _server;
   bool get running => _server != null;
   bool _displayMessages = false;
 
+  Uri get serverAddress {
+    if (!running) {
+      return null;
+    }
+    var ip = _server.address.address;
+    var port = _server.port;
+    return Uri.parse('http://$ip:$port/');
+  }
+
   Server(this._service, this._ip, this._port, this._originCheckDisabled) {
     _displayMessages = (_ip != '127.0.0.1' || _port != 8181);
   }
 
   bool _isAllowedOrigin(String origin) {
     Uri uri;
     try {
       uri = Uri.parse(origin);
     } catch (_) {
       return false;
@@ skipping 183 matching lines @@
       _notifyServerState("", 0);
       onServerAddressChange(null);
       return this;
     });
   }
 
 }
 
 void _notifyServerState(String ip, int port)
     native "VMServiceIO_NotifyServerState";